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Finding the Fourth Proportional to 353,051.60, 529,581.08 and 139,871.39

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Solution

The fourth proportional to 353,051.60, 529,581.08 and 139,871.39 is: 209,808.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,051.60 : 529,581.08 = 139,871.39 : x
  2. Step 2: Convert to fraction form
    353,051.60/529,581.08 = 139,871.39/x
  3. Step 3: Cross multiply
    353,051.60x = 529,581.08 × 139,871.39
  4. Step 4: Simplify right side
    353,051.60x = 74,073,239,479.07
  5. Step 5: Solve for x
    x = 74,073,239,479.07/353,051.60
  6. Step 6: Final answer
    x = 209,808.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.